Java Utililty Methods Number Sum

List of utility methods to do Number Sum

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Description

The list of methods to do Number Sum are organized into topic(s).

Method

intsumMinMax(int a, int b)
sum Min Max 
int localSum = a + b;
return localSum < 0 ? 0 : (localSum > 255 ? 255 : localSum);
longsumNforOddIndices(long n)
sum Nfor Odd Indices 
n = (n - 1) / 2;
return getFibonnaci(2 * n + 2);
doublesumOfCollectionDouble(Iterable doubleIterable)
Returns the sum of the values within an Double Iterable . 
double retval = 0;
for (Double iValue : doubleIterable) {
    if (iValue != null) {
        retval += iValue;
return retval;
longsumOfDigits(long n)
Return sum of decimal digits in n. 
long i = n;
long sum = 0;
while (i > 0) {
    sum = sum + (i % 10);
    i = i / 10;
return sum;
longsumOfProperDivisors(long num)
sum Of Proper Divisors 
if (num == 1) {
    return 0;
long sum = 1; 
long root = (long) Math.sqrt((double) num);
if (root * root == num) {
    sum += root;
    root -= 1;
...
NumbersumOr0(Object a, Object b)
sum Or 
if (isValidNumber(a) && isValidNumber(b)) {
    if (a instanceof Long || a instanceof Integer) {
        return ((Number) a).longValue() + ((Number) b).longValue();
    } else {
        return ((Number) a).doubleValue() + ((Number) b).doubleValue();
return 0;
...
intsumOverOne(final int n)
sum Over One 
return (n * (n + 1)) / 2;
doublesumPossitiveIntegerSequencePartial(int start, int end)
sum Possitive Integer Sequence Partial 
double largeSum = .5 * end * (end + 1);
double smallSum = .5 * start * (start + 1);
return largeSum - smallSum;
doublesumUp(final Iterable values)
sum Up 
double sum = 0.0;
for (final T value : values) {
    sum += value.doubleValue();
return sum;